CN108730174A - A kind of fine-tuning wellbore pump piston rod adaptive positioning device - Google Patents
A kind of fine-tuning wellbore pump piston rod adaptive positioning device Download PDFInfo
- Publication number
- CN108730174A CN108730174A CN201810497146.XA CN201810497146A CN108730174A CN 108730174 A CN108730174 A CN 108730174A CN 201810497146 A CN201810497146 A CN 201810497146A CN 108730174 A CN108730174 A CN 108730174A
- Authority
- CN
- China
- Prior art keywords
- piston rod
- locating piece
- cross
- locating slot
- positioning device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/144—Adaptation of piston-rods
- F04B53/147—Mounting or detaching of piston rod
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A kind of fine-tuning wellbore pump piston rod adaptive positioning device of the present invention, it is included in the cross locating piece being arranged between piston rod and intermediate draw bar, it is rotated respectively by axis pin at the end face center of cross locating piece and is provided with removable positioning key and stationary positioned key, intermediate draw bar and piston rod are respectively arranged with the first locating slot and the second locating slot close to the end face of cross locating piece, the other end of piston rod is provided with piston, stationary positioned key mapping is in the first locating slot, removable positioning key is located in the second locating slot, intermediate draw bar and piston rod are evenly arranged screw by periphery with cross locating piece and fix.The positioning device can adapt to wellbore pump piston bar and malalignment of the intermediate draw bar when being linked and packed automatically in a certain range, and then eliminate additional radial pressure, to slow down the eccentric wear degree of parts.
Description
Technical field
The invention belongs to technical field of oil drilling equipment, and in particular to a kind of wellbore pump piston bar that can be finely tuned is adaptive
Answer positioning device.
Background technology
Currently, drilling pump intermediate draw bar and crosshead and piston rod be by one end cylinder finger setting, due to parts plus
The cumulative function of work and rigging error when piston rod is connect with intermediate draw bar, should measure on power end and rack front wallboard first
Otherwise whether the concentricity in hole just needs to be adjusted bottom guide on power end within the scope of tolerance, be allowed to meet with
The requirement of concentricity between intermediate draw bar.Even so, the positioning pin of piston rod end and intermediate draw bar end when connection installation
Location hole will also tend to generate prodigious radial accumulation deviation, the two can only be linked together by force by clip at this time,
Piston rubber is also forced to deform in this way, so also just easily cause in drilling well pump work crosshead and guide plate and piston with
Serious eccentric wear between cylinder sleeve.This friction phenomenon will continue up between piston rod and intermediate draw bar the decrease of radial load or
Thoroughly disappear, guide plate, piston or cylinder sleeve can serious eccentric wear, and then cause drilling pump that can not continue to work normally, substantially reduce
The service life of parts in drilling pump, and also add the maintenance cost of drilling pump.
Invention content
The object of the present invention is to provide a kind of fine-tuning wellbore pump piston rod adaptive positioning devices, solve intermediate drawing
Bar and piston rod eccentric wear problem caused by malalignment.
The technical solution adopted in the present invention is a kind of fine-tuning wellbore pump piston rod adaptive positioning device, including
The cross locating piece being arranged between piston rod and intermediate draw bar is distinguished by axis pin at the upper and lower surface center of cross locating piece
It is provided with removable positioning key and stationary positioned key, intermediate draw bar and piston rod are respectively arranged with close to the end face of cross locating piece
The other end of a positioning groove and the second locating slot, piston rod is provided with piston, and stationary positioned key mapping is removable in the first locating slot
Positioning key is located in the second locating slot, and intermediate draw bar and piston rod are fixed with cross locating piece by screw.
The features of the present invention also characterized in that
Stationary positioned bond energy slides in the first locating slot.
Removable positioning bond energy slides in the second locating slot.
The cross section of cross locating piece is circle.
Screw is circumferentially uniformly arranged along intermediate draw bar close to the end face of cross locating piece, and screw can also be along piston rod close to ten
The end face of word locating piece is circumferentially uniformly arranged.
The invention has the advantages that the positioning device can adapt to wellbore pump piston bar in automatically in a certain range
Between malalignment of the pull rod when being linked and packed, and then eliminate additional radial pressure, to slow down the eccentric wear degree of parts.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of fine-tuning wellbore pump piston rod adaptive positioning device of the present invention；
Fig. 2 is that the structure of cross locating piece in a kind of fine-tuning wellbore pump piston rod adaptive positioning device of the present invention is shown
It is intended to；
Fig. 3 is removable fixed in a kind of cross locating piece of fine-tuning wellbore pump piston rod adaptive positioning device of the present invention
The structural schematic diagram of position key；
Fig. 4 is a kind of structural representation of the intermediate draw bar of fine-tuning wellbore pump piston rod adaptive positioning device of the present invention
Figure；
Fig. 5 is the structural representation of piston rod in a kind of fine-tuning wellbore pump piston rod adaptive positioning device of the present invention
Figure.
In figure, 1. intermediate draw bars, 2. cross locating pieces, 3. piston rods, 4. screws, 5. pistons, 6. removable positioning keys, 7. is solid
Determine positioning key, 8. first locating slots, 9. second locating slots.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of fine-tuning wellbore pump piston rod adaptive positioning device of the present invention, as shown in Figure 1, being included in piston rod 3
The cross locating piece 2 being arranged between intermediate draw bar 1 leads at the upper and lower surface center of cross locating piece 2 as shown in Figures 2 and 3
It crosses axis pin and rotates respectively and be provided with removable positioning key 6 and stationary positioned key 7, as shown in Figures 4 and 5, intermediate draw bar 1 and piston rod
3 are respectively arranged with the first locating slot 8 and the second locating slot 9, the other end setting of piston rod 3 close to the end face of cross locating piece 2
There are piston 5, stationary positioned key 7 to be located in the first locating slot 8, and stationary positioned key 7 can slide in the first locating slot 8, it is removable
Positioning key 6 is located in the second locating slot 9, and removable positioning key 6 can slide in the second locating slot 9, intermediate draw bar 1 and piston rod
3 are circumferentially uniformly provided with multiple threaded holes respectively close to the end face of cross locating piece 2, and cross locating piece 2 is circumferentially uniformly opened
Equipped with multiple through-holes, through-hole is equal with screw thread hole number and corresponds, and intermediate draw bar 1 and piston rod 3 lead to cross locating piece 2
The fixation of screw 4 is crossed, screw 4 is circumferentially uniformly arranged along intermediate draw bar 1 or piston rod 3 close to the end face of cross locating piece 2.
The cross section of cross locating piece 2 is circle.
A kind of fine-tuning wellbore pump piston rod adaptive positioning device of the present invention, assembly method are：First, by cross
Locating piece 2 is assembled into component, and the stationary positioned key 7 on cross locating piece 2 is put into the first positioning of 1 end face of intermediate draw bar later
In slot 8, the removable positioning key 6 on cross locating piece 2 is put into the second locating slot 9 of 3 end face of piston rod, finally draws centre
Bar 1 and piston rod 3 are fixed with cross locating piece 2 by screw 4, that is, complete assembly.
Removable positioning key 6 can rotate around 2 axis pin of cross locating piece and carry out radial positioning, cross in the device of the invention
The stationary positioned key 7 and removable positioning key 6 of 2 both ends of the surface of locating piece can respectively in the first locating slot 8 and the second locating slot 9 from
By sliding, and relative to playing the role of positioning with the first locating slot 8 and 9 side vertical direction of the second locating slot, and cross locating piece 2
Piston rod 3 be can adapt to respect to the connection installation at any angle in a circumferential direction of intermediate draw bar 1, therefore can be eliminated because of centre
Additional radial pressure caused by malalignment between pull rod 1 and piston rod 3 realizes uniform wear, fundamentally solves
Eccentric wear problem.
Claims (5)
1. a kind of fine-tuning wellbore pump piston rod adaptive positioning device, which is characterized in that be included in piston rod (3) and centre
The cross locating piece (2) being arranged between pull rod (1) is distinguished by axis pin at the upper and lower surface center of the cross locating piece (2)
It is provided with removable positioning key (6) and stationary positioned key (7), the intermediate draw bar (1) and the piston rod (3) are close to the cross
The end face of locating piece (2) is respectively arranged with the first locating slot (8) and the second locating slot (9), and the other end of the piston rod (3) is set
It is equipped with piston (5), the stationary positioned key (7) is located in first locating slot (8), and the removable positioning key (6) is located at institute
It states in the second locating slot (9), the intermediate draw bar (1) and the piston rod (3) pass through screw with the cross locating piece (2)
(4) fixed.
2. a kind of fine-tuning wellbore pump piston rod adaptive positioning device according to claim 1, which is characterized in that institute
Stating stationary positioned key (7) can the sliding in first locating slot (8).
3. a kind of fine-tuning wellbore pump piston rod adaptive positioning device according to claim 1, which is characterized in that institute
Stating removable positioning key (6) can the sliding in second locating slot (9).
4. a kind of fine-tuning wellbore pump piston rod adaptive positioning device according to claim 1, which is characterized in that institute
The cross section for stating cross locating piece (2) is circle.
5. a kind of fine-tuning wellbore pump piston rod adaptive positioning device according to claim 1, which is characterized in that institute
Screw (4) is stated circumferentially to be uniformly arranged close to the end face of the cross locating piece (2) along the intermediate draw bar (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497146.XA CN108730174B (en) | 2018-05-15 | 2018-05-15 | Fine-adjustable self-adaptive positioning device for piston rod of drilling pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497146.XA CN108730174B (en) | 2018-05-15 | 2018-05-15 | Fine-adjustable self-adaptive positioning device for piston rod of drilling pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108730174A true CN108730174A (en) | 2018-11-02 |
| CN108730174B CN108730174B (en) | 2020-03-27 |
Family
ID=63934954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810497146.XA Active CN108730174B (en) | 2018-05-15 | 2018-05-15 | Fine-adjustable self-adaptive positioning device for piston rod of drilling pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108730174B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443492A (en) * | 2018-11-14 | 2019-03-08 | 浙江景昌建设有限公司 | A kind of reservoir water level monitoring device |
| CN112253448A (en) * | 2020-10-21 | 2021-01-22 | 中油国家油气钻井装备工程技术研究中心有限公司 | Assembly interference eliminating device for piston rod and middle pull rod of drilling pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5996417A (en) * | 1998-03-23 | 1999-12-07 | Team Corporation | Preload piston actuator |
| CN201874803U (en) * | 2010-11-23 | 2011-06-22 | 宝鸡石油机械有限责任公司 | Device for connecting intermediate tie rod and piston rod of drill pump |
| CN201874804U (en) * | 2010-11-25 | 2011-06-22 | 宝鸡石油机械有限责任公司 | Mud pump piston rod device |
| CN202391717U (en) * | 2011-11-24 | 2012-08-22 | 青岛天时石油机械有限公司 | Self-aligning piston rod |
| CN104121185A (en) * | 2014-08-06 | 2014-10-29 | 无锡压缩机股份有限公司 | Piston rod and crosshead body connection adjusting structure |
-
2018
- 2018-05-15 CN CN201810497146.XA patent/CN108730174B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5996417A (en) * | 1998-03-23 | 1999-12-07 | Team Corporation | Preload piston actuator |
| CN201874803U (en) * | 2010-11-23 | 2011-06-22 | 宝鸡石油机械有限责任公司 | Device for connecting intermediate tie rod and piston rod of drill pump |
| CN201874804U (en) * | 2010-11-25 | 2011-06-22 | 宝鸡石油机械有限责任公司 | Mud pump piston rod device |
| CN202391717U (en) * | 2011-11-24 | 2012-08-22 | 青岛天时石油机械有限公司 | Self-aligning piston rod |
| CN104121185A (en) * | 2014-08-06 | 2014-10-29 | 无锡压缩机股份有限公司 | Piston rod and crosshead body connection adjusting structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443492A (en) * | 2018-11-14 | 2019-03-08 | 浙江景昌建设有限公司 | A kind of reservoir water level monitoring device |
| CN112253448A (en) * | 2020-10-21 | 2021-01-22 | 中油国家油气钻井装备工程技术研究中心有限公司 | Assembly interference eliminating device for piston rod and middle pull rod of drilling pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108730174B (en) | 2020-03-27 |
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| PB01 | Publication | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20201223 Address after: 721002 No.2 Dongfeng Road, Jintai District, Baoji City, Shaanxi Province Patentee after: Baoji Oilfield Machinery Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC national oil and gas drilling equipment Engineering Technology Research Center Co., Ltd Address before: 721002 No.2 Dongfeng Road, Jintai District, Baoji City, Shaanxi Province Patentee before: Baoji Oilfield Machinery Co.,Ltd. |